Clean Git Diffs (Userscript for making Github and Gitlab ignore whitespace by default)

TJMenu (js multi-menu handler with nesting, global activation/selection events and path tracking, and per-item mixed click and/or hover handling with full mobile/touchscreen support - all with minimal markup and no setup)

Arcanum Illyria (wiki and tools for the browser-based game Illyriad, using MediaWiki with custom skin and other customizations/extensions)